Treehouse Masters: Out on a Limb

In an enhanced episode, a structure to observe black bears is built for an inn in rural Pennsylvania that features a wraparound deck and a closed-circuit bear-cam, and is accessible by a 45-foot bridge.

In an enhanced episode, a nautical-theme structure is built on the Pacific coast in Washington state to make a couple's dream of a seaside tree house come true, but Pete has his hands full with their requests for a rainwater shower system and composting toilet, and all the materials must be delivered to the location by barge.

In an enhanced episode, Pete builds an adventure-theme two-story structure overlooking a gorge in Pennsylvania's Pocono Mountains that features suspension bridges, a rock-climbing wall and a sleeping loft, as well as a tribute to the family's grandmother.

In an enhanced episode, a butterfly-theme sanctuary that incorporates maple, cherry, tulip and beech trees, and features a 400-square-foot deck and a jungle gym, is built for an Ohio organization that provides grief services to people who have lost loved ones.

In an enhanced episode, a permanent 60-foot high residence is constructed in a redwood forest in California that features a bathroom, lounge and bedroom loft, and a view of the Pacific Ocean.

In an enhanced episode, a recording studio's addition is built in a group of cedar trees near Seattle that features cork walls and a picture window overlooking a stream. Later, the space is christened by Grammy-winning singer Cee Lo Green.

In an enhanced episode, an author reared in Kenya requests an African-style circular hut at his home in Washington state, so Pete builds a thatched-roof structure out of cedar, and adds a spiral staircase to an aerial walkway that features a tribute to a beloved family pet.

In an enhanced episode, a Texas dad wants a man cave where he can bond with his first grandson, so Pete uses three oak trees to build an 800-square-foot space that sleeps five and is equipped with a bathroom, kitchen and cigar humidor, and an exterior deck with a meat smoker.

In an enhanced episode, a Scottish couple in Tulsa who are avid gardeners ask for a treetop cottage that honors their heritage, so in addition to tartan curtains, Pete adds floral-theme decorative railings, hanging flower baskets and storage space for gardening tools.

In an enhanced episode, a house for bird-watching is built for an Arkansas family on their lakefront property, and features driftwood railings woven to look like a nest; a wraparound, screened-in porch; and a wildlife viewing deck.

In an enhanced episode, a Japanese teahouse is built for a family in Seattle that features shoji screens, tatami mats and a low table with a sunken floor, and a deck that overlooks the client's gardens and koi ponds.

In an enhanced episode, a farm in Wisconsin is the setting for a two-story tree house that features two decks; a loft; a lounge; and an art studio that has storage space for paint and canvases, a slop sink for washing brushes, an easel, drafting tables and a sewing station.

A Pacific Northwest family request a structure with a Native American theme that features a climbing wall, a kennel and a back deck.

In an enhanced episode, country singer Brian Kelley of Florida Georgia Line requests a tree house for his Nashville home that has a speakeasy theme and features a rooftop lounge; a room for writing and recording; and an area for his pet sugar gliders.